In Moscow, it's common for two buildings to have blind walls facing each other over a wide alley. This setup provides the perfect space for a lithe, little office to build itself a perch. The structure fuses onto the neighboring buildings with steel clamps, hovering off the ground so pedestrians can stroll under it. It also glows at night, thanks to a translucent plastic shell, looking like a wasps' nest from hell.
— theatlanticcities.com